Vehicle window glass assembly

Abstract

A vehicle window glass assembly according to one embodiment of the present disclosure includes: a vehicle window glass pane with a silver-containing conductor layer of predetermined pattern formed on a main surface of the glass pane; a solder layer made of an indium-containing lead-free solder; a connection terminal connected to the conductor layer via the solder layer, and a power line fixed to the connection terminal. The connection terminal includes: a metal plate having a first main surface joined to the solder layer and a second main surface located opposite to the first main surface; and a fixing part that fixes the power line to the second main surface. The power line extends from the fixing part. A starting point of the power line extending from the fixing part is situated above a region inside a joint region defined by the solder layer and the first main surface.

1 . A vehicle window glass assembly, comprising:
 a vehicle window glass pane with a silver-containing conductor layer of predetermined pattern formed on a glass main surface of the glass pane;   a solder layer made of a lead-free solder containing indium;   a connection terminal connected to the conductor layer via the solder layer; and   a power line fixed to the connection terminal,   wherein the connection terminal comprises: a metal plate having a first main surface joined to the solder layer and a second main surface located opposite to the first main surface; and a fixing part that fixes the power line to the second main surface,   wherein the power line extends from the fixing part,   wherein a starting point of the power line extending from the fixing part is situated above a region inside an edge of a first joint region defined by the solder layer and the first main surface, and   wherein the lead-free solder is a non-eutectic In—Sn alloy which contains indium as a predominant component, comprises 65 mass % to 74 mass % of indium, 3 mass % to 9 mass % of silver and 0 mass % to 2 mass % of each of antimony, copper, nickel and zinc, with the balance being tin and inevitable impurities, and has a solidus temperature of 120° C. or higher.   
     
     
         2 . The vehicle window glass assembly according to  claim 1 , wherein the non-eutectic In—Sn alloy comprises 67 mass % to 70 mass % of indium, 5 mass % to 9 mass % of silver and 0 mass % to 1 mass % of each of antimony, copper, nickel and zinc, with the balance being tin and inevitable impurities, and has a solidus temperature of 120° C. or higher. 
     
     
         3 . The vehicle window glass assembly according to  claim 1 , wherein the alloy comprises 5 mass % to 9 mass % of silver. 
     
     
         4 . The vehicle window glass assembly according to  claim 1 , wherein the first joint region is smaller than a second joint region defined by the solder layer and the conductor layer, and wherein the edge of the first joint region is situated above a region inside an edge of the second joint region. 
     
     
         5 . The vehicle window glass assembly according to  claim 1 , wherein the first joint region ranges over the whole of the first main surface. 
     
     
         6 . The vehicle window glass assembly according to  claim 1 , wherein the starting point of the power line extending from the fixing part is situated above a center-of-gravity portion of the joint region defined by the solder layer and the first joint surface. 
     
     
         7 . The vehicle window glass assembly according to  claim 1 , wherein the power line is fixed to the fixing part by crimping, brazing or welding. 
     
     
         8 . The vehicle window glass assembly according to  claim 1 , wherein the metal plate has a regular polygonal or substantially regular polygonal shape, a circular shape or an elliptical shape. 
     
     
         9 . The vehicle window glass assembly according to  claim 1 , wherein the metal plate has a thickness of 0.3 mm to 2.0 mm. 
     
     
         10 . The vehicle window glass assembly according to  claim 1 , wherein the glass pane is made of a non-reinforced glass. 
     
     
         11 . The vehicle window glass assembly according to  claim 1 , wherein an area of the first joint region is 0.85 to 0.95 times as large as an area of the second joint region. 
     
     
         12 . The vehicle window glass assembly according to  claim 1 , wherein the power line has a diameter of 0.3 sq to 2.0 sq. 
     
     
         13 . The vehicle window glass assembly according to  claim 1 , wherein an area of the first main surface of the metal plate is 36 mm 2  to 64 mm 2 . 
     
     
         14 . The vehicle window glass assembly according to  claim 1 , wherein the metal plate is made of one kind of metal selected from the group consisting of copper, zinc, iron, nickel, tin, cobalt and chromium, or an alloy containing two or more kinds selected from the group consisting of copper, zinc, iron, nickel, tin, cobalt and chromium. 
     
     
         15 . The vehicle window glass assembly according to  claim 14 , wherein the metal plate is made of copper or brass.